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Viessmann Vitocal 222-A - Installation Sequence; Installing the Outdoor Unit

Viessmann Vitocal 222-A
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12
Installation information
Types of installation:
Floorstanding installation with line entry above
ground level
Floorstanding installation with line entry below
ground level
Wall mounting
Technical guide
Floorstanding installation:
Use supports for floorstanding installation (accesso-
ries).
Where such supports cannot be used, install the out-
door unit freestanding on a solid base of
at least 100 mm height.
In difficult climatic circumstances (temperatures
below zero, snow, humidity), we recommend instal-
ling the appliance on a plinth of approx. 300 mm
height.
Take account of the weight of the outdoor unit: See
following table.
Wall mounting:
Use the wall mounting bracket set (accessories).
The wall must meet the structural requirements.
Siting:
Never install with the discharge side facing the main
wind direction.
Weather influences:
Observe wind loads when installing the unit on sites
exposed to the wind.
Where outdoor units are installed on a flat roof, con-
siderable wind loads may occur, depending on the
relevant wind load zone and height of the building.
For such installation situations we recommend hav-
ing the substructure sized by a design engineer in
accordance with DIN 1991-1-4.
Incorporate the outdoor unit into the lightning protec-
tion system.
Consider the heat absorbed (heating mode) and heat
emitted (cooling mode) by the appliance when
designing weatherproofing measures or an enclo-
sure.
Condensate:
Ensure that condensate can drain freely.
Create a permanent gravel bed under the outdoor
unit as a soakaway.
In regions with prolonged cold seasons, provide an
electric ribbon heater (accessories) for the conden-
sate pan.
Insulation against structure-borne noise and vibra-
tions between the building and outdoor unit:
Route cables/leads between the indoor and outdoor
units free of stress.
Installation only on walls with a high weight per unit
area (> 250 kg/m
2
); in other words not on lightweight
walls, roof structures, etc.
Anti-vibration components are included in the stand-
ard delivery of the wall mounting brackets. Do not
use additional anti-vibration mounts, springs, rubber
mounts, etc.
Installation sequence
Installing the outdoor unit
5831412
Installation

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